Currently, zoom official hasn’t support Italian, but you can do it by yourself, WebSDK <= 1.7.2
$.i18n.load(youLangDict, "it-IT");
$.i18n.reload("it-IT");
https://marketplace.zoom.us/docs/sdk/native-sdks/web/advanced/multi-language
it-IT.json file is I use google translate to Italian, you can modify by yourself.